Tire tread and buttress



FIG. 1 is a perspective view of a tire tread and buttress showing our new design, it being understood that the pattern is repeated uniformly throughout the circumference of the tread and buttress as shown schematically by solid lines;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a fragmentary elevation view of one side thereof; and

FIG. 4 is a fragmentary elevation view of the opposite side thereof. 

The ornamental design for a tire tread and buttress, as shown and described. 